package homework.api02.homework_api02;

public class ObjectDemo {
    public static void main(String[] args) {
        Point p = new Point(100,200);
        System.out.println(p);
        System.out.println(p.toString());

        String s1 = new String("hello");
        String s2 = new String("hello");
        System.out.println(s1==s2);//false
        System.out.println(s1.equals(s2));//true

        StringBuilder builder1 = new StringBuilder("hello");
        StringBuilder builder2 = new StringBuilder("hello");
        System.out.println(builder1==builder2);//false'
        System.out.println(builder1.equals(builder2));//false

        //类型不同,所以一定为false
        System.out.println(s1.equals(builder1));

        Point p1 = new Point(100, 200);
        Point p2 = new Point(100, 200);
        System.out.println(p1==p2);//false
        System.out.println(p1.equals(p2));//true

    }
}
